[project @ 2002-01-08 10:36:24 by sewardj]

[ghc-hetmet.git] / ghc / includes / InfoTables.h

diff --git a/ghc/includes/InfoTables.h b/ghc/includes/InfoTables.h
index 498f6b8..2e10e87 100644 (file)
--- a/ghc/includes/InfoTables.h
+++ b/ghc/includes/InfoTables.h
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
- * $Id: InfoTables.h,v 1.19 2000/04/05 15:27:59 simonmar Exp $
+ * $Id: InfoTables.h,v 1.24 2001/12/18 19:42:41 sebc Exp $
  * 
  * (c) The GHC Team, 1998-1999
  *
@@ -14,21 +14,11 @@
    Profiling info
    -------------------------------------------------------------------------- */
 
-#ifdef PROFILING
-
 typedef struct {
     char *closure_type;
     char *closure_desc;
 } StgProfInfo;
 
-#else /* !PROFILING */
-
-typedef struct {
-  /* empty */
-} StgProfInfo;
-
-#endif /* PROFILING */
-
 /* -----------------------------------------------------------------------------
    Parallelism info
    -------------------------------------------------------------------------- */
@@ -42,13 +32,12 @@ typedef struct {
   StgInfoTable *rbh_infoptr;     /* infoptr to the RBH  */
 } StgParInfo;
 
-#else /* !PAR */
+#endif /* 0 */
 
 typedef struct {
        /* empty */
 } StgParInfo;
 
-#endif /* PAR */
 
 /*
    Copied from ghc-0.29; ToDo: check this code -- HWL
@@ -98,6 +87,14 @@ typedef struct {
 #endif
 
 /* -----------------------------------------------------------------------------
+   Ticky info
+   -------------------------------------------------------------------------- */
+
+typedef struct {
+    /* empty */
+} StgTickyInfo;
+
+/* -----------------------------------------------------------------------------
    Debugging info
    -------------------------------------------------------------------------- */
 
@@ -117,14 +114,15 @@ typedef struct {
 
 /* The type flags provide quick access to certain properties of a closure. */
 
-#define _HNF (1<<0)  /* head normal form?  */
+#define _HNF (1<<0)  /* head normal form?    */
 #define _BTM (1<<1)  /* bitmap-style layout? */
-#define _NS  (1<<2)  /* non-sparkable      */
-#define _STA (1<<3)  /* static?            */
-#define _THU (1<<4)  /* thunk?             */
-#define _MUT (1<<5)  /* mutable?           */
-#define _UPT (1<<6)  /* unpointed?         */
-#define _SRT (1<<7)  /* has an SRT?        */
+#define _NS  (1<<2)  /* non-sparkable        */
+#define _STA (1<<3)  /* static?              */
+#define _THU (1<<4)  /* thunk?               */
+#define _MUT (1<<5)  /* mutable?             */
+#define _UPT (1<<6)  /* unpointed?           */
+#define _SRT (1<<7)  /* has an SRT?          */
+#define _IND (1<<8)  /* is an indirection?   */
 
 #define isSTATIC(flags)    ((flags) &_STA)
 #define isMUTABLE(flags)   ((flags) &_MUT)
@@ -146,6 +144,7 @@ extern StgWord16 closure_flags[];
 #define closure_MUTABLE(c)      (  closureFlags(c) & _MUT)
 #define closure_UNPOINTED(c)    (  closureFlags(c) & _UPT)
 #define closure_SRT(c)          (  closureFlags(c) & _SRT)
+#define closure_IND(c)          (  closureFlags(c) & _IND)
 
 /* same as above but for info-ptr rather than closure */
 #define ipFlags(ip)             (closure_flags[ip->type])
@@ -158,6 +157,7 @@ extern StgWord16 closure_flags[];
 #define ip_MUTABLE(ip)          (  ipFlags(ip) & _MUT)
 #define ip_UNPOINTED(ip)        (  ipFlags(ip) & _UPT)
 #define ip_SRT(ip)              (  ipFlags(ip) & _SRT)
+#define ip_IND(ip)              (  ipFlags(ip) & _IND)
 
 /* -----------------------------------------------------------------------------
    Info Tables
@@ -170,7 +170,7 @@ extern StgWord16 closure_flags[];
 
 typedef struct {
   StgWord size;
-  StgWord bitmap[0];
+  StgWord bitmap[FLEXIBLE_ARRAY];
 } StgLargeBitmap;
 
 /*
@@ -206,7 +206,14 @@ typedef union {
 
 typedef StgClosure* StgSRT[];
 
+/*
+ * The entry code pointer must be the first word of an info table.
+ * See the comment in ghc/rts/Storage.h (Plan C) for details.
+ */
 typedef struct _StgInfoTable {
+#ifndef TABLES_NEXT_TO_CODE
+    StgFunPtr       entry;
+#endif
     StgSRT         *srt;       /* pointer to the SRT table */
 #if defined(PAR) || defined(GRAN)
     struct _StgInfoTable    *rbh_infoptr;
@@ -214,6 +221,9 @@ typedef struct _StgInfoTable {
 #ifdef PROFILING
     StgProfInfo     prof;
 #endif
+#ifdef TICKY
+    StgTickyInfo    ticky;
+#endif
 #ifdef DEBUG_CLOSURE
     StgDebugInfo    debug;
 #endif
@@ -226,10 +236,9 @@ typedef struct _StgInfoTable {
     StgWord         srt_len : 16; /* }                                   */
 #endif
 #ifdef TABLES_NEXT_TO_CODE
-    StgCode         code[0];
+    StgCode         code[FLEXIBLE_ARRAY];
 #else
-    StgFunPtr       entry;
-    StgFunPtr       vector[0];
+    StgFunPtr       vector[FLEXIBLE_ARRAY];
 #endif
 } StgInfoTable;